29 Mar
2005
29 Mar
'05
1:16 p.m.
On Tue, 2005-03-29 at 17:46 +0100, John Honniball wrote:
Jules Richardson wrote:
I gather from poking around that the top two backplane connectors follow
the accepted VME standard pinout, but the bottom connector is the one
that carries the power on Sun machines and is proprietary...
unfortunately it'd be the bottom one I'd need to know in order to power
up the board away from the machine!
I've only got the board here with me, not the
machine, so can't do any
work under load conditions - but then I'm pretty sure we don't have any
bus extension boards that'd fit this Sun board anyway (it's extremely
deep - much more than I've typically seen on machines with a cardcage)
Sun's so-called VME boards are much bigger than real VME boards,
both in height and width. I have some card "frames" here that
allow you to plug ordinary VME cards into Suns, if you need any.
Hmm, I can't immediately think of a use for them to be honest. Our Sun 2
is multibus, and our 3/50 is just an all-in one thing. They'd fit our
3/150, but that's reasonably tricked out with goodies already.
The machine with this 4/330 board in it only has one slot free on it;
the rest are crammed full of boards with the number-crunching DSP
processors on (4 processors per board, and I believe 16MB of DRAM per
processor - it's a monster!).
cheers
Jules